Potential Use of Cow Manure for Poly(Lactic Acid) Production

Cow manure is an abundant residue and poses a problem regarding recycling. Intensive animal farming produces manure, which, if not properly managed, can contaminate nearby water bodies soils with nutrient excess. There are 1.9 billion cattle worldwide, calculated capacity to produce 7.6 tons per year. Feeding of these cows carried out mainly cellulosic material. Therefore, cow contains important fraction lignocellulose. be valorized using such lignocellulosic fractions as the raw material several fermentative processes. This transformed into sugar, which can, in turn, used feed lactic acid bacteria (LAB). LAB (LA), later polymerized poly(lactic acid) (PLA), bioplastic promising market forecasts. review describes most updated processes for all necessary steps from biomass LAB. Key process parameters obtain PLA lignocellulose reviewed analyzed herein, including extraction, sugar transformation, pretreatment, hydrolysis, fermentation, purification, polymerization. highlights potentiality well its use PLA.